Methods and systems for a pivotable tablet mount
A system for mounting a medical imaging device on a tablet arm is provided. In one embodiment the tablet arm includes an upper portion configured to rotate a mounted electronic device relative to a central axis of the upper portion and a lower portion coupled to the upper portion and extending downwards, away from the upper portion along a vertical axis perpendicular to the central axis, the upper portion and lower portion forming a hollow structure configured to house cables of an electronic device.
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Embodiments of the subject matter disclosed herein relate to devices for displaying x-ray images and controlling x-ray imaging systems.
BACKGROUNDMobile C-arm x-ray imaging systems have been developed to allow x-ray examination of a patient from different positions without repositioning the patient. The C-arm x-ray imaging systems are preferably used in the medical and surgical arts due to their small size, mobility and ability to provide high-resolution x-ray images in real time. During an operation, the C-arm x-ray imaging systems may be used to monitor progress during the operation and immediately perform any corrective actions that may be required during the procedure. The x-ray images are displayed on a device with a monitor, such as a tablet, that is coupled to the C-arm x-ray imaging systems by an arm.
The tablet displays x-ray images in high-definition as the images are generated and electronically stores image data. The tablet may be configured to interface with an x-ray imaging system to allow a user to operate the system through touch-sensitive digital controls on the tablet. Thus the tablet serves both as a display device and a system controller.
BRIEF DESCRIPTIONIn one embodiment, a tablet arm includes an upper portion configured to rotate a mounted electronic device relative to a central axis of the upper portion and a lower portion coupled to the upper portion and extending downwards, away from the upper portion along a vertical axis perpendicular to the central axis, the upper portion and lower portion forming a hollow structure configured to house cables of an electronic device.
It should be understood that the brief description above is provided to introduce in simplified form a selection of concepts that are further described in the detailed description. It is not meant to identify key or essential features of the claimed subject matter, the scope of which is defined uniquely by the claims that follow the detailed description. Furthermore, the claimed subject matter is not limited to implementations that solve any disadvantages noted above or in any part of this disclosure.
The present invention will be better understood from reading the following description of non-limiting embodiments, with reference to the attached drawings, wherein below:
The following description relates to various embodiments of a tablet arm for an x-ray imaging system. As depicted in
X-ray imaging may be used to obtain images of internal parts of a patient. Such imaging is used in the healthcare sector to diagnose and monitor a variety of conditions including, for example, injuries to the patient's skeleton, such as breaks and fractures, vascular health, or to identify cancerous growths. By using a mobile C-arm x-ray imaging system, a more efficient system than conventional stationary x-ray systems for obtaining internal images is provided. In particular, the C-arm x-ray imaging system is useful in an operating room where re-positioning of operating staff and equipment occurs with high frequency. The C-arm x-ray imaging system may be readily maneuvered around the patient, thereby allowing the patient to remain stationary and comfortable.
The C-arm gantry 106 is coupled to a mobile base 108 of the mobile x-ray imaging system 100 via a C-arm carrier 110 and a movable arm 112. The C-arm carrier 110 and the movable arm 112 may be controlled by a system controller 107 to adjust a position of an imaging isocenter 114, also referred to herein simply as isocenter 114, relative to the mobile base 108, to adjust a position of the C-arm gantry 106 relative to the mobile base 108, and/or to adjust a position of the x-ray source 102 and the x-ray detector 104 relative to the isocenter 114. To be specific, the isocenter 114 of the C-arm gantry 106 comprises the intersection of the optical axis (defined by a focus of the x-ray source 102 and the center of the x-ray detector 104 or the normal to the x-ray detector 104 that goes through the focus) and the C-arm rotation axis along the C-arm carrier 110.
The x-ray detector 104 includes a square or rectangular flat panel detector 109. In other examples, the flat panel detector 109 may have various geometries, such as circular, hexagonal, oval, etc. Dimensions of the flat panel detector 109, such as length, width, radius, or circumference, may define an active or receptive area of the flat panel detector 109. The flat panel detector 109 may be a complementary metal-oxide semiconductor (CMOS) or a crystalline silicon (c-Si) based detector, adapted to facilitate nearly continuous zooming.
The C-arm carrier 110 is coupled to the C-arm gantry 106 and configured to rotate the C-arm gantry 106 along a gantry track 118 in the depicted x-y plane. To that end, the C-arm carrier 110 may include one or more motors (not shown) for sliding the C-arm gantry 106 along the gantry track 118. The C-arm gantry 106 may be rotated in the x-y plane about a rotation axis or the isocenter 114 relative to the C-arm carrier 110, such that the x-ray source 102 and the x-ray detector 104 are rotated relative to the isocenter 114 in the x-y plane.
In addition, the C-arm carrier 110 further comprises a support base 120 mechanically coupled to the C-arm carrier 110 as depicted. The support base 120 is in turn mechanically coupled to the movable arm 112. The support base 120 may be adapted to rotate in the y-z plane, thereby also rotating the C-arm gantry 106 in the y-z plane. The movable arm 112 may be configured to slide along the x-axis, thereby extending or retracting the C-arm-gantry along the x-axis. Movement of the movable arm 112 may be actuated by a bearing assembly 116. In this way a positioning of the C-arm gantry 106 is adjustable in 3-dimensional space, allowing an orientation of the C-arm gantry 106 to accommodate a patient according to the patient's position, e.g., seated versus prone and also accommodate a location of a region of the patient to be imaged.
A combination of adjustments to a position of the movable arm 112 and to a position of the support base 120 may vary an orientation of an imaging center 124 of the C-arm gantry 106 relative to the patient. For example, controlling the movable arm 112 enables a translation of the imaging center 124 in the depicted x-y plane. Furthermore, rotation of the C-arm gantry 106 in the y-z plane via the support base 120, as well as rotation of the C-arm gantry 106 relative to the C-arm carrier 110, adjusts the relative position of the x-ray source 102 and the x-ray detector 104 relative to the imaging center 124 in three-dimensional space.
As described above, the C-arm gantry 106 is coupled to the mobile base 108 via the C-arm carrier 110, support base 120, and the movable arm 112. The mobile base 108 includes a plurality of wheels including driven wheels 126 and free wheels 128. The driven wheels 126 may be driven by one or more motors 130 for moving the mobile base 108 and thus the entire mobile x-ray imaging system 100. In addition to moving the mobile x-ray imaging system 100 along the x-axis (i.e., to the left and right), the motor 130 may drive the driven wheels 126 in the z direction, thus enabling the mobile x-ray imaging system 100 to be re-positioned in any orientation in the x-z plane. As an example, two motors 130 for each of the driven wheels 126 may be provided, wherein one motor 130 comprises a traction motor and a second motor 130 comprises a direction motor. In other examples, dual wheels (with differential traction motors), omnidirectional wheels, or other types of motorized wheels may be used. The free wheels 128 may not be driven by a motor. Further, as depicted, the driven wheels 126 may be positioned in the front of the mobile base 108 (i.e., on the side of the mobile base 108 closer to the C-arm gantry 106) and thus may be advantageously positioned closer to the center of gravity of the mobile x-ray imaging system 100. In some examples the free wheels 128 may be positioned at the front side of the mobile base 108 on a structure extending towards the C-arm gantry 106. In some examples, all wheels of the mobile x-ray imaging system 100 may be driven wheels 126.
In some examples, the mobile x-ray imaging system 100 may include a high voltage generator (not shown) housed within a housing 132 of the mobile base 108. Providing the high voltage generator within the mobile base 108 increases the weight of the mobile base 108, thus stabilizing the mobile x-ray imaging system 100. Furthermore, providing the high voltage generator within the mobile base 108 eliminates the need to house the high voltage generator remotely from the mobile x-ray imaging system 100, thereby eliminating long high-voltage cables typically connected to the x-ray source 102 via a tether for providing the x-ray source 102 with high voltages. In addition, some examples may include an on-board generator, a heat exchanger, and a battery at the mobile base 108 to enable fully autonomous operation of the mobile x-ray imaging system 100.
The mobile x-ray imaging system 100 may be operated by the system controller 107. In one example, the system controller 107 may be a tablet device 140 with an integrated computing environment and display monitor. The system controller 107 may include one or more processing units in a variety of customizable enterprise configurations, including in a networked or combination configurations. The system controller 107 may include one or more computer readable media, wherein each medium may be configure to include data or computer executable instructions such as data structures, objects, programs, routines, or other program modules that may be accessed by the one or more processors.
The computer executable instructions may cause the one or more processors of the enterprise to perform a particular function or group of functions are may be examples of program code means for implementing steps for methods of processing. Furthermore, a particular sequence of the executable instructions provides an example of corresponding acts that may be used to implement such steps.
Examples of computer readable media include random-access memory (“RAM”), read-only memory (“ROM”), programmable read-only memory (“PROM”), erasable programmable read-only memory (“EPROM”), any solid state storage device (e.g., flash memory, smart media, etc.) or any other device or component capable of providing data or executable instructions that may be accessed by the one or more processors. The one or more processors may include a central processing unit (CPU) and one or more processors configured to perform a particular task. The one or more processors may execute the instructions provided on computer readable media, such as on the memory(ies), or from a communication connection.
A data manipulating system may be included in the CPU that may be used to enable data and/or instructions to be exchanged with the CPU through one or more peripheral I/O devices, such as a mouse or a printer, etc. Information may be exchanged via the data manipulating system across one or more network interfaces including a connection that allows data to be exchanged between processing units, a network adapter for connection to a local area network (“LAN”), or a wireless link for connection to a wide area network (“WAN”), such as the Internet.
The tablet device 140 may thus be used directly connected, via cables, to the mobile x-ray imaging system 100 to control operation of the mobile imaging x-ray system. The tablet device 140, in addition to storing and executing instructions stored in the memory(ies) of the system controller 107, may also display images obtained by the mobile x-ray imaging system 100. The system controller may include an imaging control subsystem that is configured to display an image on the monitor of the tablet device 140. For example, x-ray images obtain in real-time may be immediately displayed on the tablet device screen during operation of the mobile x-ray imaging system 100. The images may be stored in the memory(ies) of the system controller 107 and may be sent over the network interfaces for further storage, processing etc.
The display screen of the tablet device 140 may be implemented with touch-screen technology to provide a touch-screen user interface. An operator may manipulate the displayed x-ray image by tapping, swiping, pinching, dragging, or otherwise moving the operator's fingers in contact with the tablet device screen to move an image, hone in on a region of the image or zoom in/out. Furthermore, a control panel may be displayed on the tablet device monitor to adapt control of the mobile x-ray imaging system 100 to the touch-screen user interface. The control panel may include an array of buttons, simulating a physical control panel that may be included in a conventional x-ray imaging system. The array of buttons may allow the operator to activate/deactivate the x-ray source 102, adjust a position of the C-arm gantry 106, save images, send images over the network interfaces, etc.
When the system controller 107 is connected to a WAN by a wireless link, the tablet device 140 may be detached from the cables coupling the tablet device 140 the mobile x-ray imaging system 100 as well as a power source, and used to manipulate x-ray images at an alternate location, e.g., in another room or building. In some examples, the mobile x-ray imaging system 100 may be adapted with wireless capabilities and the detached tablet device 140 may be used to operate the mobile x-ray imaging system 100 by the WAN. When connected to the mobile-x-ray imaging system 100 and to the power source, the tablet device 140 may be mounted on a tablet arm 150. In a conventional tablet arm 150, the tablet device may be mounted in a fixed position where a width 152 of the tablet device 140 is greater than a height 154 of the tablet device 140, e.g., a landscape orientation, as shown in
In the landscape orientation, the width 152 of the tablet device 140 may obstruct the operator's view of the patient positioned within the C-arm gantry 106 when the operator is operating the mobile x-ray imaging system via the control panel on the tablet device screen. The x-ray image and control panel displayed on the tablet device screen may also be in a fixed configuration with the image and control panel arranged adjacent to one another along the x-axis. The operator may resort to swiveling the tablet device 140, if the tablet arm 150 is configured to rotate at a base of the tablet arm 150, to widen the operator's field view to include the patient or a staff member assisting the patient. However, swiveling the tablet device 140 may obscure the operator's view of the tablet device screen.
Use of the tablet device 140 may be made more flexible and accommodating towards visibility for the mobile x-ray imaging system operator by configuring the tablet arm to allow at least 90 degree rotation of the tablet device 140. Rotating the tablet device 140 may adjust a position of the tablet device 140 so that the width 152 becomes the height of the tablet device 140 while the height 154 becomes the width, the new width 154 smaller than the new height 152 of the tablet device 140. The tablet device is thus adjusted to a portrait orientation, the portrait orientation narrower in width and taller in height than the landscape orientation.
Pivoting of the tablet device 140 between the landscape and portrait orientations may be performed without detaching the cables from the tablet device 140 or imposing excessive strain at connection points between the cables and the tablet device 140 by adapting the tablet device 140 to couple to the cables at a rear side of the tablet device 140, the rear side opposite of the tablet device screen. Conventional tablet devices for mobile x-ray imaging systems may have cable ports disposed along an edge of the tablet device 140. Edge-wise coupling to cables may result in pulling and sweeping of cables when rotating the tablet device 140 between the landscape and portrait orientations. However, when the cables are instead connected at the rear side of the tablet device 140 and extend from the rear side away from the tablet device 140, along an axis of rotation of the tablet device 140, the cables may experience minimal torque during pivoting of the tablet device 140. Furthermore, the cables may be enclosed within the tablet arm 150, thereby containing the cables within a rigid supporting frame and shielding the cables from contact with external objects.
The tablet arm 150 may include two portions; a rotatable and tiltable head that couples directly to the rear side of the tablet device 140 and a stem that extends along the y-axis between the tablet device and an outer housing of the bearing assembly 116. The stem may intersect with the head at a first, top end of the stem and attach to the outer housing of the bearing assembly 116 at a second, bottom end. As such, the tablet arm 150 may enable the tablet device 140 to be adjusted between the landscape and portrait orientations while remaining connected to the tablet arm 150 and without detaching the cables from the rear side of the tablet device 140.
An example of a tablet arm 202 that may be used to alternate a position of a tablet device between a landscape orientation and a portrait orientation is shown in
The head 204 may include a number of components that are in shown in greater detail in an exploded view 400 of the tablet arm 202 in
The mounting plate 208 may have a plurality of circular pockets, as shown in
The ball spring plungers 224 may be cylindrical tubes extending through a thickness of the tilt plate 212, the thickness defined along a central axis 220 of the head 204. As shown in
The stop pin 410, as shown in
The stop pin 410 may be configured to protrude from the front-facing surface of the tilt plate 212 by a greater distance along the z-axis than the ball spring plungers 224. When components of the head 204 of the tablet arm 202 are assembled, the stop pin 410 is inserted into the curved slot 404 of the mounting plate 208. The diameter of the stop pin 410 may be similar to or slightly smaller than the width of the curved slot 404 so that the stop pin 410 may slide freely within the curved slot 404. In this way, the mounting plate 208 may be rotated through a 90 degree angle, as indicated by arrows 286 and 288 in
For example, when the mounting plate 208 is rotated according to arrow 286 in
As an example, when the mounting plate 208 is rotated into a first position as indicated by arrow 286 until the stop pin 410 contacts the first end 414 of the curved slot 404, the first ends 223 of the ball spring plungers 224 may align with two of the plurality of pockets in the rear-facing surface of the mounting plate 208, as shown in
When the ball spring plungers 224 are not aligned with the plurality of pockets, the balls 225 at the first ends 223 of the ball spring plungers 224 may be in contact with the rear-facing surface of the mounting plate 208 and depressed into the ball spring plungers 224. Thus, an extent of rotation of the mounting plate 208 is controlled by interaction of the stop pin 410 with the curved slot 404 enabling locking of the mounting plate 208 between two positions, the two positions corresponding to contact between the stop pin 410 and ends of the curved slot 404 and alignment of the ball spring plungers 224 with the plurality of pockets in the mounting plate 208.
Rotation of the mounting plate 208 relative to the tilt plate 212 and the stem 206 of the tablet arm may be further illustrated in
In the first position 500 illustrated in
The increased depth of the plurality of pockets compared to the track 508 allows the balls 225 of the ball spring plungers 224 to protrude out of the first ends 223, due to spring force of the enclosed springs, a greater distance than when the ball spring plungers 224 are in contact with the track 508. The engagement of the ball spring plungers 224 with the plurality of pockets locks mounting plate 208 in place when the mounting plate 208 is in the first position 500 and in the third position 700. Adjustment of the mounting plate 208 between the first position 500 and the third position 700 is achieved by applying a force to the mounting plate in the clockwise direction to adjust the mounting plate 208 from the first position 500 to the third position 700 or a counter-clockwise direction to adjust the mounting plate 208 from the third position 700 to the first position 500. If the force is greater than the spring force exerted on the balls 225 of the ball spring plungers 224 by the springs housed therein, such as 5 lbs of force, the rotational force allows the ball spring plungers 224 to disengage from the plurality of pockets, releasing the mounting plate 208 from the first position 500 or third position 700.
Returning to
A set of standoff blocks 226 may be coupled to the rear-facing surface of the tilt plate 212, extending away from the tilt plate 212. A first end 228, proximate to the tilt plate 212, of the set of standoff blocks 226 may support L-shaped spring clips 230, extending up along an outer surface of the set of standoff blocks 226 and across tops of the set of standoff blocks 226 towards the central axis 220. Springs 240 may extend between the spring clips 230, shown detached from the spring clips 230 in
Friction hinges 232 may be attached to a second end 234 of each of the set of standoff blocks 226 via bolts 236. The friction hinges 232 may each comprise three sections: a first section 250 aligned with the y-axis, a second section 252 aligned with the x-axis, and a third second 254 aligned with the z-axis. The first section 250 is shown in
The friction hinges 232 may be adapted to pivot around an axis of rotation that is aligned with the second section 252, along the x-axis. The pivoting about the second section 252 allows the head 204 of the tablet arm 202 to rotate through an angle, as indicated by arrow 256 shown in
Tilting of a tablet device when mounted on a tablet arm is depicted in
Turning back to
The stem 206 of the tablet arm 202 may be a rigid hollow shell with a circular base 262, as shown in
The back wall 266 of the stem 206 may include bosses 272 protruding along the z-axis in a frontwards direction. The bosses 272 may be used to couple to matching bosses or pins in a removable front cover for the stem 206 (as shown in
The top end 238 of the stem 206 may have a width 274 that is wider than a width 276 of the back wall 266 and may or may not be similar to a diameter of the circular base 262. The top end 238 includes a shelf 278 arranged perpendicular to the back wall 266. The shelf 278 may support the head 204 of the tablet arm 202, coupling directly to the second section 252 and the third section 254 of the friction hinges 232, the friction hinges 232 secured to the shelf 278 by a plurality of bolts 428, as shown in
As described above, the head 204 of the tablet arm 202 may include a plurality of components stacked along the central axis, behind the mounting plate 208, between the mounting plate 208 and the tilt plate 212, and behind the tilt plate 212. The plurality of stacked components are shown in detail in the exploded view 400 of
A second needle bearing stack 423, also formed from three annular disks, is positioned behind the tilt plate 212 and between the tilt plate 212 and a set of wave springs 424. The set of the wave springs 424 depicted in
A snap ring 426 is disposed behind the set of wave springs 424. The snap ring 426 may be configured to be tightened around the steel tube to act as a brace to secure and maintain the stacked components of the head 204 in place around the steel tube 222. The snap ring 426 may be compressed in place by a tool such as pliers or vice grips and, once compressed, may not be readily removed. The snap ring 426 may resist the spring force imposed by the set of wave springs 424, causing the components in front of the set of wave springs 424 to absorb the spring force.
The components of the head 204 of the tablet arm 202 may further include a plurality of bolts oriented both parallel with the central axis 220, e.g., the bolts 236, and perpendicular to the central axis 220, e.g., the plurality of bolts 428. The plurality of bolts may align with apertures in one or more of the stacked components, allowing components to be coupled to form a cohesive unit. For example, a first bolt 430 of the bolts 236, the first bolt 430 parallel with the central axis 220, may be threaded through an aperture in the first section 250 of one of the friction hinges 232, through an aperture in one of the standoff blocks 226, and into an aperture in the tilt plate 212, the apertures all linearly aligned. As another example, a second bolt 432 of the plurality of bolts 428, the second bolt 432 arranged perpendicular to the central axis 220, may be inserted through an aperture in the second section 252 of one of the friction hinges 232 and into an aperture in the shelf 278 at the top end 238 of the stem 206. The apertures may be linearly aligned along the y-axis and insertion of the second bolt 432 secures the head 204 of the tablet arm 202 to the stem 206.
In this way, the tablet arm 202 may be configured to allow rotation at the mounting plate 208, relative to the stem 206, and enable tilting of the head 204 relative to the stem 206 via the friction hinges 232. The mounting plate 208 may be locked into two positions, the two positions arranged perpendicular to one another, by engagement of the ball spring plungers 224 with the plurality of pockets in the rear-facing surface of the mounting plate 208. Rotational movement of the mounting plate 208 may be bound by interaction of the stop pin 410, protruding in the forwards direction from the tilt plate 212, with the curved slot 404 in the mounting plate 208. It will be appreciated that the tablet arm 202 depicted in
The tablet arm 202 may also contain and guide cables coupled to cable ports in a rear-facing surface of the tablet device. The cable ports may be aligned with the central axis 220 and with the central apertures of the stacked components of the head 204 of the tablet arm 202, including the central aperture 402 of the mounting plate 208 and the central aperture 422 of the tilt plate 212. The cables coupled to the cable ports may protrude from the rear-facing surface of the tablet device along the central axis 220, through the steel tube 222. To maintain organization of the cables and inhibit contact of the cables with external objects, the cables may be fed through the tablet arm 202 and enclosed within the interior of the tablet arm 202 between the tablet device and the outer housing of the bearing assembly.
For example, a path of the cables through the tablet arm 202 is indicated by arrows 302 in
The cables may be bundled into a cable bundle by securing the cables together with a zip-tie at an end of the cable bundle proximate to the cable ports of the tablet device. The zip-tie may also attached the cable bundle to the tail 260 of the cable zip-tie clip 258 in the steel tube 222. A bundling of cables and securing of the cables to a cable zip-tie clip is shown in
A bundle of cables 804 protrudes from a rear-facing surface 806 of the tablet device 802, through a steel tube 808. The cable bundle 804 may be bundled together by a zip-tie 810 that is also looped around a cable zip-tie clip 812. The cable zip-tie clip 812 may be attached to an inner surface of the steel tube 808. As a result, the steel tube 808, cable zip-tie clip 812, and cable bundle 804 may rotate together when the tablet device 802 is adjusted between the first position 800 and the second position 900.
The tablet device 802 may be coupled to a mounting plate 814, which may be the mounting plate 208 of
When the tablet device 802 is manually adjusted, e.g., pressure applied by an operator's hand, from the first position 800 to the second position 900, the tablet device 802, the mounting plate 814, the steel tube 808, and the cable zip-tie clip 812 move in unison. As the cable bundle 804 is coupled to cable ports in the rear-facing surface 806 of the tablet device 802, the cable bundle 804 also rotates by 90 degrees in the clockwise direction from the first position 800 to the second position 900. The cable bundle 804 extends along a central axis of rotation 820 of the head 803 of the tablet arm 805, attached to the cable zip-tie clip 812 by the zip-tie 810. The 90 degree rotation of the tablet device causes the cable bundle 804 to spin or twist clockwise by 90 degrees rather than sweeping through an arc if the cable bundle 804 were coupled to the tablet device at a distance away from the central axis of rotation 820. A torque exerted on a connecting point between the cable bundle 804 and the rear-facing surface 806 of the tablet device 802, e.g., at the cable ports, may be much smaller than if the cables are instead coupled to the tablet device at a region away from the central axis of rotation 820, such as along an outer periphery of the tablet device 802.
Attachment of the cable bundle 804 to the cable zip-tie clip 812 allows the cable bundle 804 to remain untangled during rotation and to suspend the cable bundle 804 above any components of the head 803 of the tablet arm 805 that may come into contact with the cable bundle 804. Over time, friction generated between the cable bundle 804 and components in contact with the cable bundle 804 during rotational movement of the cable bundle 804 may degrade coatings or sleeves surrounding cables of the cable bundle 804. The transmission of the twisting of the cable bundle 804 from the end coupled to the tablet device 802 along a length of the cable bundle may decay rapidly along the length. As such, a portion of the cable bundle 804 extending through a stem 807 of the tablet arm 805 may experience little motion.
A cable bundle extending along an axis of rotation from a rear-facing surface of a tablet device may be further shielded from external objects by attached a top cover over a head of a tablet arm, as shown in
The tablet device 1002 and tablet arm 1004 are also shown in
Returning to
The tablet device 1002, tablet arm 1004, and outer housing of the bearing assembly 1012 are shown in
In the first position 1200 of
The control panel 1210 adjacent to the reference image 1208 may rely on a touch-sensitive capacity of the display screen 1202 to allow an operator to control the mobile x-ray imaging system. In a conventional x-ray imaging system, a physical control panel may be positioned along an outer housing of a bearing assembly, e.g., the outer housing of the bearing assembly 116 of
The two portions of the display screen 1202 are arranged side-by-side in the landscape orientation to maximize dimensions of each displayed portion across a surface area of the display screen 1202. By displaying the two portions in line along a horizontal axis of the display screen 1202, e.g., perpendicular to gravity, an operator may have a clear view of the reference image 1208 while easily accessing the control panel 1210.
When the tablet device 1002 is rotated to the second position 1300 in
An upper edge 1310 of the tablet device 1002, shown in
In the portrait orientation, the display screen 1202 of the tablet device 1002 also includes two portions; an upper portion displaying a reference image 1312, similar to the reference image 1208 of
Although the control panel 1314 is stacked below the reference image 1312 instead of beside the reference image 1312, as for the first position 1200 of
For example, adjustment of the tablet device 1002 to the portrait orientation may be desirable for an operator of shorter stature. The lower placement of the control panel 1314 in the portrait orientation shown in
In this way, a tablet arm enables a tablet device to be tilted and swiveled so that the display screen 1202 may be seen from a wide viewing field and the tablet device may be easily adjusted to a more narrow configuration (e.g., the portrait orientation) to reduce obstruction of an operator's view of a patient or staff member positioned proximate to an x-ray source of the mobile x-ray imaging system. The tablet arm is configured to lock the tablet device in a landscape or a portrait orientation, with a reference image and control panel displayed on the tablet device automatically repositioned based on the orientation of the tablet device. Adjustment of the orientation of the tablet device is conducted without decoupling cables from the tablet device resulting from a connection of the cables along an axis of rotation of the tablet device, thereby reducing torque imposed on the cable connections. The tablet device may be readily dismounted from the tablet arm and detached from the cables to be utilized as a portable, wireless device.
A technical effect of the disclosure includes adjustment of a mounted tablet device between a landscape and a portrait orientation by a tablet arm with a mobile joint. Another technical effect of the disclosure includes minimizing torque imposed on cables attached to the mounted tablet by coupling the cables to a rear surface of the tablet device along an axis of rotation of the tablet device.
In one embodiment a tablet arm includes an upper portion configured to rotate a mounted electronic device relative to a central axis of the upper portion and a lower portion coupled to the upper portion and extending downwards, away from the upper portion along a vertical axis perpendicular to the central axis, the upper portion and lower portion forming a hollow structure configured to house cables of an electronic device. In a first example of the tablet arm, the upper portion includes a mounting plate configured to couple to a rear-facing surface of the electronic device. A second example of the tablet arm optionally includes the first example, and further includes wherein the mounting plate is configured to rotate 90 degrees around the central axis of the upper portion. A third example of the tablet arm optionally includes one or more of the first and second examples, and further includes, wherein the upper portion includes a tilt plate arranged behind the mounting plate and spaced away from the mounting plate by a plurality of annular components of the upper portion. A fourth example of the tablet arm optionally includes one or more of the first through third examples, and further includes, wherein the tilt plate has ball spring plungers configured to engage with pockets in the mounting plate and lock the mounting plate in of two positions, the mounting plate rotatable between the two positions. A fifth example of the tablet arm optionally includes one or more of the first through fourth examples, and further includes, wherein the tilt plate has a top pin protruding from a front-facing surface of the tilt plate that extends through a curved slot in the mounting plate. A sixth example of the tablet arm optionally includes one or more of the first through fifth examples, and further includes, wherein rotation of the mounting plate through 90 degrees is halted in a first direction by contact between the top pin and a first end of the curved slot and halted in a second direction, the second direction opposite of the first direction, by contact between the top pin and a second end of the curved slot. A seventh example of the tablet arm optionally includes one or more of the first through sixth examples, and further includes, wherein the tilt plate and the mounting plate are similarly coupled to a steel tube extending through central apertures of both the tilt plate and the mounting plate. An eighth example of the tablet arm optionally includes one or more of the first through seventh examples, and further includes, wherein the upper portion includes friction hinges configured to pivot the upper portion relative to the vertical axis and maintain a tilted position of the upper portion.
In another embodiment, a mounting system for a medical imaging device includes a tablet arm configured to enclose cables coupled to the medical imaging device, the tablet arm including, a tiltable and pivotable head arranged at an upper end of the tablet arm configured to couple to a rear-facing surface of the medical imaging device, and a stem extending vertically down from the head. In a first example of the mounting system, the head and the medical imaging device are configured to pivot through 90 degrees relative to a central axis of the head as a single unit. A second example of the mounting system optionally includes the first example, and further includes, wherein the head is configured to lock the medical imaging device in a first position that corresponds to a landscape orientation of the medical imaging device and a second position that corresponds to a portrait orientation of the medical imaging device. A third example of the mounting system optionally includes one or more of the first and second examples, and further includes, wherein the head is configured to unlock the tablet from the first position and the second position when a force is applied to the medical imaging device along a radial direction around the central axis of the head. A fourth example of the mounting system optionally includes one or more of the first through third examples, and further includes, wherein the head and the stem have hollow interiors that are fluidly coupled by an opening in a shelf of the head. A fifth example of the mounting system optionally includes one or more of the first through fourth examples, and further includes, wherein the hollow interiors of the head and the stem are configured to accept and guide cables connected to the rear-facing surface of the medical imaging device along the central axis of rotation of the head and down through the stem continuously. A sixth example of the mounting system optionally includes one or more of the first through fifth examples, and further includes, wherein the cables are attached to a clip arranged in the head of tablet arm in a path of the cables by a zip-tie. A seventh example of the mounting system optionally includes one or more of the first through sixth examples, and further includes, wherein the cables at a connecting point between the cables and medical imaging device are configured to twist along the central axis of rotation when the medical imaging device is pivoted between the portrait and landscape orientations.
In another embodiment, a display for an x-ray imaging system includes a hollow arm for mounting a display device, the arm including a first portion configured to rotate and a second, stationary portion and a display device with cable ports on a rear-facing surface and coupled to the first portion of the hollow arm. In a first example of the display, cables of the display device protrude from a central region of the display device along a central axis of rotation and extending through an interior of the hollow arm hidden from view. A second example of the display optionally includes the first example, and further includes, wherein the display device is configured to be quickly disconnected from the first portion of the hollow arm without use of additional tools.
As used herein, an element or step recited in the singular and proceeded with the word “a” or “an” should be understood as not excluding plural of said elements or steps, unless such exclusion is explicitly stated. Furthermore, references to “one embodiment” of the present invention are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Moreover, unless explicitly stated to the contrary, embodiments “comprising,” “including,” or “having” an element or a plurality of elements having a particular property may include additional such elements not having that property. The terms “including” and “in which” are used as the plain-language equivalents of the respective terms “comprising” and “wherein.” Moreover, the terms “first,” “second,” and “third,” etc. are used merely as labels, and are not intended to impose numerical requirements or a particular positional order on their objects.
This written description uses examples to disclose the invention, including the best mode, and also to enable a person of ordinary skill in the relevant art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those of ordinary skill in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.
Claims
1. A tablet arm comprising:
- an upper portion configured to rotate a mounted electronic device relative to a central axis of the upper portion; and
- a lower portion coupled to the upper portion and extending downwards, away from the upper portion along a vertical axis perpendicular to the central axis, the upper portion and lower portion forming a hollow structure configured to house cables of an electronic device,
- wherein the upper portion includes a tilt plate, a set of standoff blocks, and friction hinges, and wherein a first end of the set of standoff blocks is coupled to a rear-facing surface of the tilt plate, and a second end of the set of standoff blocks is attached to the friction hinges, the first end and the second end arranged on opposite surfaces of the set of standoff blocks.
2. The tablet arm of claim 1, wherein the upper portion includes a mounting plate configured to couple to a rear-facing surface of the electronic device.
3. The tablet arm of claim 2, wherein the mounting plate is configured to rotate 90 degrees around the central axis of the upper portion.
4. The tablet arm of claim 3, wherein the tilt plate arranged behind the mounting plate and spaced away from the mounting plate by a plurality of annular components of the upper portion.
5. The tablet arm of claim 4, wherein the tilt plate has ball spring plungers configured to engage with pockets in the mounting plate and lock the mounting plate in of two positions, the mounting plate rotatable between the two positions.
6. The tablet arm of claim 4, wherein the tilt plate has a top pin protruding from a front-facing surface of the tilt plate that extends through a curved slot in the mounting plate.
7. The tablet arm of claim 6, wherein rotation of the mounting plate through 90 degrees is halted in a first direction by contact between the top pin and a first end of the curved slot and halted in a second direction, the second direction opposite of the first direction, by contact between the top pin and a second end of the curved slot.
8. The tablet arm of claim 4, wherein the tilt plate and the mounting plate are similarly coupled to a steel tube extending through central apertures of both the tilt plate and the mounting plate.
9. The tablet arm of claim 1, wherein the upper portion includes friction hinges configured to pivot the upper portion relative to the vertical axis and maintain a tilted position of the upper portion, and wherein the friction hinges include three sections: a first section coupling directly to the set of standoff blocks, a second section, and a third section coupling directly to a top end of the lower portion.
10. A mounting system for a tablet, comprising:
- a tablet arm configured to enclose cables coupled to the tablet, the tablet arm including: a tiltable and pivotable head arranged at an upper end of the tablet arm configured to couple to a rear-facing surface of the tablet; and a stem extending vertically down from the head, wherein the upper end of the tablet arm includes a tilt plate, a set of standoff blocks, and friction hinges, and wherein a first end of the set of standoff blocks is coupled to a rear-facing surface of the tilt plate, and a second end of the set of standoff blocks is attached to the friction hinges, the first end and the second end arranged on opposite surfaces of the set of standoff blocks.
11. The mounting system of claim 10, wherein the head and the tablet are configured to pivot through 90 degrees relative to a central axis of the head as a single unit.
12. The mounting system of claim 11, wherein the head is configured to lock the tablet in a first position that corresponds to a landscape orientation of the tablet and a second position that corresponds to a portrait orientation of the tablet.
13. The mounting system of claim 12, wherein the head is configured to unlock the tablet from the first position and the second position when a force is applied to the tablet along a radial direction around the central axis of the head.
14. The mounting system of claim 10, wherein the head and the stem have hollow interiors that are fluidly coupled by an opening in a shelf of the head.
15. The mounting system of claim 14, wherein the hollow interiors of the head and the stem are configured to accept and guide cables connected to the rear-facing surface of the tablet along the central axis of rotation of the head and down through the stem continuously.
16. The mounting system of claim 15, wherein the cables are attached to a clip arranged in the head of tablet arm in a path of the cables by a zip-tie.
17. The mounting system of claim 12, wherein the cables at a connecting point between the cables and tablet are configured to twist along the central axis of rotation when the tablet is pivoted between the portrait and landscape orientations.
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Type: Grant
Filed: Nov 21, 2018
Date of Patent: Mar 1, 2022
Patent Publication Number: 20200158278
Assignee: General Electric Company (Schenectady, NY)
Inventors: Kristofer Daugirdas (Salt Lake City, UT), Naveen Stephan Chandra (Salt Lake City, UT)
Primary Examiner: Hoon K Song
Application Number: 16/198,719
International Classification: F16M 13/02 (20060101); A61B 6/00 (20060101);